My F350 has a factory 4" block with the fairly stiff springs and an overload spring above those. I have been thinking about the much better ride my daughter's F150 4x4 has (same year, 96) and I am thinking of swapping some parts.

Here is what I am thinking. Use F150 springs with Sky Offroads 4.5" shackle flip and remove the block. This puts me back where I was height wise with much softer springs, but with LESS potential axle wrap and wheel hop due to no block. It also would be a more natural spring movement with the shackle reversed and not under tension.

The F150 springs are rated at 1785lbs, my F350 springs are rated 2975lbs

I don't tow anything heavy with this truck and would much rather have the better flex and ride the softer springs would allow. It would need a 4-6* shim to point the pinion back down but I see much better ride and no wheel hop with this set up. I could even add air bags to tow later if I need to.

What you think? Am I missing anything?
I have a set of 3" wide F150 springs in my parts truck.

I plan a RSK to address the front ride.

 

Did some measuring today. The springs on my F150 parts truck are a 4 leaf pack of 1/4" thick springs. They have 1.25" less arch compared to my F350 springs.
The F350 Springs are a 4 spring pack of 3/8' thick springs and the bottom spring is arched and resting on the others. This spring is flat on the F150 springs and would only come into play if the springs were pretty compressed.

So what does this tell me?

I can use the Sky 6" shackle flip with front hanger to drop the spring down with no pinion angle problems.

I remove the stock 4" block which will pretty much eliminate axle wrap.

With the F150 springs having less arch I will end up 3/4" higher in the rear than I am now. I can live with that.

This will give me a great ride from the rear. I can leave the overload spring assembly (mounted on top and has it's own stops) there or remove it and use bags if I need to tow something heavy, but that isn't what I bought this truck for. With my back trouble this truck simply rides too stiff and I really want to keep it so softer is better.

 

Sounds good to me. Post up how it works out.